Effect of Rosiglitazone on Myocardial Blood Flow Regulation in Type 2 Diabetes

NCT ID: NCT00549874

Last Updated: 2007-11-09

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

27 participants

Study Classification

INTERVENTIONAL

Study Start Date

2002-02-28

Study Completion Date

2006-11-30

Brief Summary

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The overall hypothesis to be tested is that increased insulin resistance contributes to abnormal cardiac blood flow regulation in type 2 diabetic patients, which can be reversed by 6 months treatment with rosiglitazone. The planned experimental approach will be to utilize nuclear medicine techniques to evaluate whether the administration of rosiglitazone for 6 months can reverse regional deficits in myocardial blood flow and glucose utilization in type 2 diabetes in a randomized double blind controlled study. These studies will help elucidate the potential of rosiglitazone to correct deficits of myocardial blood flow complicating diabetes with the overall aim being the eventual prevention of sudden cardiac death.

Detailed Description

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Conditions

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Type 2 Diabetes

Keywords

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insulin resistance type 2 diabetes myocardial perfusion nitrosative stress thiazolidinediones

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

QUADRUPLE

Participants Caregivers Investigators Outcome Assessors

Study Groups

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1

Group Type EXPERIMENTAL

Rosiglitazone

Intervention Type DRUG

oral 8 mg/once daily for 6 months

2

Group Type EXPERIMENTAL

Glyburide

Intervention Type DRUG

20 mg/ once daily for 6 months

Interventions

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Rosiglitazone

oral 8 mg/once daily for 6 months

Intervention Type DRUG

Glyburide

20 mg/ once daily for 6 months

Intervention Type DRUG

Eligibility Criteria

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Inclusion Criteria

* Type 2 diabetes
* 30-75 years of age
* less than 1% fluctuation in HbA1c over 3 months
* women must be on contraception
* HbA1c 6-9%
* willingness to sign approved consent form

Exclusion Criteria

* Nursing mothers, pregnant women (excluded by a negative pregnancy test).
* Subjects requiring insulin therapy (\>20 units/day) and can not be converted to sulfonylurea therapy without loss of diabetes control.
* Patients with a history of drug or alcohol dependence in the last 5 years
* Patients with pre-existing cardiovascular disease including coronary artery disease, heart attack, heart failure, abnormal heart rhythms, structural abnormalities and valve disease, peripheral vascular disease and uncontrolled high blood pressure.
* Patients with a history of high cholesterol requiring therapy.
* Patients with severe systemic disease other than diabetes which has as a recognized complication neuropathy
* Patients currently taking drugs which act on the blood vessels (for example for hypertension)
* Patients taking antidepressants, or other drugs or medications known to interfere with the uptake or metabolism of catecholamines (stress hormones)
* Patients with poor renal function or have significant liver disease
* Patients with a history of previous kidney, pancreas or cardiac transplantation.
* Patients with a history of "severe hypoglycemia" which required the assistance of a third party or ketoacidosis requiring hospital admission within the last 3 months.
* Patients with lung disease for example resulting from chronic obstructive airways disease.
* Patients with abnormal thyroid function tests.
* Patients having taken other systemic investigational drugs (especially for neuropathy) or initiating a new or experimental insulin delivery device within 3 months of starting the study.
* Patients with a history of allergic reactions to multiple drugs or biological products.
* Obese patients (BMI greater than 35).
* Patients who refuse to sign the informed consent.
Minimum Eligible Age

30 Years

Maximum Eligible Age

75 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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GlaxoSmithKline

INDUSTRY

Sponsor Role collaborator

University of Michigan

OTHER

Sponsor Role lead

Principal Investigators

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Martin Stevens, MD, PhD

Role: PRINCIPAL_INVESTIGATOR

University of Michigan

Locations

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University of Michigan

Ann Arbor, Michigan, United States

Site Status

University of Toledo - Health Campus

Toledo, Ohio, United States

Site Status

Countries

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United States

References

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Pop-Busui R, Oral E, Raffel D, Byun J, Bajirovic V, Vivekanandan-Giri A, Kellogg A, Pennathur S, Stevens MJ. Impact of rosiglitazone and glyburide on nitrosative stress and myocardial blood flow regulation in type 2 diabetes mellitus. Metabolism. 2009 Jul;58(7):989-94. doi: 10.1016/j.metabol.2009.02.020.

Reference Type DERIVED
PMID: 19394661 (View on PubMed)

Other Identifiers

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SKB 276

Identifier Type: -

Identifier Source: org_study_id